Think about doing the Tukey’s HSD on Step 6 of an Independent-Measures ANOVA. Let’s say that you look up q, calculate HSD value, and you get HSD = 5.15. Given this HSD value of 5.15, and given the means on the APA table below, which pairs of means are significantly different from each other? HSD value = 5.15 APA table: Group 1 Group 2 Group 3 M 57.00 62.67 63.33 SD 2.00 1.53 2.52 Group of answer choices The significant pairs are Group 1 vs. Group 2 and Group 1 vs. Group 3 The only significant pair is Group 1 vs. 2 The significant pairs are Group 1 vs. Group 3 and Group 2 vs Group 3 None of the pairs of groups is significantly different

Think about doing the Tukey’s HSD on Step 6 of an Independent-Measures ANOVA. Let’s say that you look up q, calculate HSD value, and you get HSD = 5.15. Given this HSD value of 5.15, and given the means on the APA table below, which pairs of means are significantly different from each other? HSD value = 5.15 APA table: Group 1 Group 2 Group 3 M 57.00 62.67 63.33 SD 2.00 1.53 2.52 Group of answer choices The significant pairs are Group 1 vs. Group 2 and Group 1 vs. Group 3 The only significant pair is Group 1 vs. 2 The significant pairs are Group 1 vs. Group 3 and Group 2 vs Group 3 None of the pairs of groups is significantly different

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 57E: What is an experiment? Give two examples.

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What is an experiment?
What is an experiment? Give two examples.
Morgan City Fire Chief Sidney Pyro is concerned about the low efficiency scores that his firefighters receive at the state testing institute. Chief Pyro believes that these scores result because some firefighters are not in good physical condition. Pyro orders 75 randomly selected firefighters to participate in an hour of exercise per day. Another 200 firefighters have no required exercise. After 60 days, all firefighters are tested again by the state. Chief Pyro collects the data and performs a two-sample independent t-test by using SPSS to examine if there is a statistically significant difference between the treatment and control groups; the SPSS results are shown in the table below. Group Statistics Groups N Mean Std. Deviation Std. Error Mean Test Scores Treatment 75 74.5 31.4 3.6 Control 200 70.6 26.3 1.9 a. Formulate a null and research hypothesis: H0: H1: Collect all the necessary data: Mean score of the treatment group:…
Morgan City Fire Chief Sidney Pyro is concerned about the low efficiency scores that his firefighters receive at the state testing institute. Chief Pyro believes that these scores result because some firefighters are not in good physical condition. Pyro orders 75 randomly selected firefighters to participate in an hour of exercise per day. Another 200 firefighters have no required exercise. After 60 days, all firefighters are tested again by the state. Chief Pyro collects the data and performs a two-sample independent t-test by using SPSS to examine if there is a statistically significant difference between the treatment and control groups; the SPSS results are shown in the table below. Groups N Mean Std. Deviation Std. Error Mean Test Scores Treatment 75 74.5 31.4 3.6 Control 200 70.6 26.3 1.9 Formulate a null and research hypothesis: H0: H1: Collect all the necessary data: Mean score of the treatment group: Mean score of the control group: Sample size of the…
The Asian longhorned beetle kills trees by burrowing within the trunk and branches and disrupting the sap flow. This beetle favors hardwood trees, such as maple, elm, and ash. A new pesticide will be be tested in a major metropolitan city. A statistician designs an experiment for 200 mature maple trees and randomly assigns half of the trees to receive this new pesticide, and the rest of the trees receive a control treatment. Is there any obvious way to improve this experiment to evaluate the effectiveness of this new pesticide? Choose the best answer below: A. Yes, stratifying must be used B. No, basic variations have been accounted for. C. Yes, matching must be used. D. Yes, a placebo is missing. E. Yes, blocking must be used.
Which of these sounds like a situation where you would want to use an Independent-Measures ANOVA? A) Comparing the health of students at a campus with a Student Health Center vs. students at a campus without a Student Health Center B) Comparing the technological ability of a group of children when they are 10 years old vs. when they reach 15 years old vs. when they reach 20 years old C) Comparing the pain levels of people with an anti-arthritis drug vs. the pain levels of the general population of all arthritis patients D) Comparing the technological ability of three groups: people born in the years 2000, 2005 and 2010
A study is made of residents in Phoenix and its suburbs concerning the proportion of residents who subscribe to Sporting News. A random sample of n1 = 86 urban residents showed that r1 = 13 subscribed, and a random sample of n2 = 95 suburban residents showed that r2 = 20 subscribed. Does this indicate that a higher proportion of suburban residents subscribe to Sporting News? Use a 5% level of significance. What are we testing in this problem? single meandifference of proportions single proportiondifference of meanspaired difference (a) What is the level of significance?State the null and alternate hypotheses. H0: p1 < p2; H1: p1 = p2H0: p1 = p2; H1: p1 > p2 H0: p1 = p2; H1: p1 < p2H0: p1 = p2; H1: p1 ≠ p2 (b) What sampling distribution will you use? What assumptions are you making? The Student's t. We assume the population distributions are approximately normal.The standard normal. The number of trials is sufficiently large. The Student's t. The number of…
A psychology professor was interested in which study strategy was most effective for her students. The study strategy was randomly assigned to 36 students to one of three groups. Participants received either Study strategy 1, Study Strategy 2, or Study Strategy 3. The professor later gave them an exam to see which study strategy was most effective. What is the IV? What are the levels of the IV? What is the DV? What design is this? What statistical analysis is used? When and why must you run Post-hocs? In APA format write your results.
For each of the following scenarios, what are two names for the ANOVA that would be conducted to analyze the data? A researcher examined the effect of gender and pet ownership (no pets, one pet, more than one pet) on a measure of loneliness. In a study on memory, participants completed a memory task once each week for 4 weeks—twice after sleeping 8 hours and twice after sleeping 4 hours. In each sleep condition, the participants completed the task after ingesting a caffeinated beverage and again, on another day, after ingesting a “placebo” beverage that they were told contained caffeine. A study examined the impact of students’ Instagram profiles on numbers of Instagram friends. The researchers were interested in the effect of (1) the profile photo—either an identifiable photo of the student or a photo of someone or something else (e.g., a dog)—and (2) bio length—either short (fewer than 75 characters) or long (75 characters or more).
two types of preoperative skin preparation before performing open heart surgery. These two preparations used aqueous iodine and insoluble iodine. Do these data provide sufficient evidence at the α = 0.05 level to justify the conclusion that they type of skin preparation and infection are associated?